Vol. 3 No. 3 (2024): HPU2.Nat.Sci.Tech

Natural Sciences and Technology

• A probabilistic method to prove AM-QM inequality

  Trung-Dzung Nguyen

  3-9

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• An ab initio calculation on the structural, electronic and magnetic properties of Ni-doped \(\text{Bi}_{0.5}\text{Na}_{0.5}\text{TiO}_3\)

  Quoc-Van Duong, Anh-Duong Nguyen, Cao-Khang Nguyen, Ngoc-Anh Nguyen Thi, Chinh-Cuong Nguyen, Duc-Dung Dang, Tien-Lam Vu, Minh-Thu Le

  10-19

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• Stepwise grafting polyethyleneimine onto silica surface for Cu(II) removal

  Mahmoud Elsayed Hafez, Thanh-Thuy Mai Thi, Van-Tuan Mai, Thuy-Tien Do, Thu-Huyen Dang Thi, Phuong-Uyen Pham, Hai-Yen Vu Thi, Quynh-Mai Le, The-Duyen Nguyen

  20-26

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• Algebraic method for image reconstruction in ultrasonic tomography

  The-Lam Nguyen, Quang-Huy Tran

  27-34

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• The one-pot fabrication of green-emitting composites based on PMMA

  Mohapatra Priyaranjan, Xuan-Bach Nguyen, Thuy-Trang Pham, Sinh-Hung Nguyen, Huy-Hoang Bui, Ba-Trang Doan, Kim-Dat Ha, Duc-Nam Cao, My-Anh Nguyen Thi, Minh-Anh Nguyen, Le-Duc Nguyen, Van-Phong Bui, Van-Hao Nguyen, Quang-Bac Hoang

  35-42

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• An investigation into the morphological and anatomical characteristics of three cassava (\( Manihot \,\, esculenta\)) varieties collected from the Northern provinces of Vietnam

  Van-Tien Tran, Kim-Tien Nguyen Thi, Lan-Huong Do Thi

  43-51

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• Some data about endangered and rare plant species in Me Linh Station for Biodiversity, Vinh Phuc province

  Thuy-Diu Tran, Thi-Nga Tran, Thi-Phuong Dong, Thanh-Hoa Mai, Minh-Tam Ha

  52-59

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• On the second-order sufficient optimality condition in nonconvex multiobjective optimization problems

  Van-Tuyen Nguyen, Thi-Yen Nguyen

  60-69

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• On minimization of quadratic functions over closed convex sets in Hilbert spaces

  Van-Nghi Tran, Nang-Tam Nguyen, Chi-Thanh Le

  70-79

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• Hybrid affine cipher and eigenvector methods for cryptography

  Anh-Thang Le, Thanh-Huyen Pham Thi, Van-Dong Vu, Mai-Thanh Hoang Thi, Bich-Ngoc Nguyen Thi

  80-87

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